Cambridge IGCSE Chemistry · Syllabus 0620 · Electrochemistry
Active electrode
What is Active electrode?
An electrode that takes chemical part in the electrolysis instead of merely conducting. A copper anode in aqueous copper(II) sulfate is the required example: the copper of the electrode itself is oxidised and passes into the solution as copper ions, so the anode loses mass and no gas is released there.
This definition is part of the Electrochemistry chapter in Cambridge IGCSE Chemistry.